Air-bag for vehicle-tires



A. HUETTER.

AIR BAG FOR VEHICLE TIRES, APPLICATION FILED APR. 19, 1920.

1,374,570. Patented Apr. 12, 1921.

UNHTED STATES PATENT OFFICE- ANDREW HUETTER, OF DAYTON, OHIO, ASSIGNOR TO THE ALLSTEEEL RIDEWELL TIRE AND RUBBER COMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

AIRFBAG FOR VEHICLE-TIRES.

Specification of Letters Patent.

Application filed April 19, 1920. Serial No. 374,983.

T 0 all whom it may concern Be it known that I, ANDREW HUETTnR, a former subject of the Emperor of Austria, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new 'and useful Improvements in Air-Bags for Vehicle-Tires, of which the following is a specification.

will'not only be'cheapened in construction,

but will be more efficient in use, positive in operation, uniform in action, and unlikely to et out of repair. 1

' further object of the'invention is to i provide a pliable air bag having therein an annular stay or reinforcement for the excess material by which the expansion or 'detlection of the core or bag is compensated.

A further object of the invention is to provide a pliable air bag having thereon beads or surface configurations which will give to the edges of the casing a more desirable and finished outline.

A further object, of the invention is to provide in such a pliable core or air bag, a

compensating fold of material intermediate the head or edges of the tire casing, which will compensate for the expansionor distention of the air bag.

Vith the above primary and other incidental objects in view as will mofe fully appear in the specification, the invention consists of the features of construction, the parts and combinations thereof,'and the mode of operation or their equivalents as hereinafter described and set forth in the claims.

In the preferred form of embodiment of theinvention disclosed in the accompanying drawings, Figure '1 is a transverse sectional view of a tire mold or matrix, containing a tire casing within which the expansible core or air bag forming the subject matter hereof, is located. Fig. 2 is a detail sectional perspective view of a portion of the air bag or core removed from the tire.

Like parts are indicated-by similar char-' acters of reference views- Referring to the drawings, 1-1 are the respective halves of the tire mold ormatrix which determines the exterior shape and configuration of the finished product. The tire casing formed therein is indicated at 2, which tire casing during process of manthroughout the several Patented Apr. 12, 1921.

ufacture is subjected -to internal pressure by means of an inflatableor expansible core or anbag 3. This lnflatableair bag 3 1s formed of pliable yielding material, namely rubberized fabrioJ' The core or air bag is formed into a,hollow or tubular annulus,

the transverse or sectional periphery of instance this excess material or compensating fold is concentrated upon the inner side of the core bag at a point between the beaded edges of the tire casing. To this end the tubularcore bag has been formed with a recnteringfold.4, coincident with the inner circumference of the core bag. At the inner edge or apex of this fold 4 there is provided a reinforcement band The reinforcement band 5 may be of any suitable character such as a series'of strands of cord or a thickening of the side 'wall of the core, bag by an increased number of ply or folds of material. Likewise it may be an independent strip of different material, secured to the apex or edge of the bellows like fold. This reinforcement band is sesses less elasticityfthan theside walls thereof, the reinforcement band 5 being of greater diameter than the interior .circum-,

continuous throughout the annular core bag and poswalls of the core bag fall into two parallel circumferential bights or folds 7 on each side of the reinforcement band.

Formed upon the exterior surface of the 'alls ot thee-ore bagco-ineident with the parallel bights or folds 7 are shoulder-like beads or ribs 8, formed by a thickening of the walls ot the core bag at these points. These shoulders or beads give definition to the inner edges of the tire casing, by torming a rounded or abrupt edge 9, whereas the ordinary term of core bag allows the formation of a teather edge or fin. at this point. The Walls of the core bag preferably though not necessarily possess some degree of elasticity. They are, however, preterably quite pliable whereby they will readily accommodate themselves to the interior eontour ot the tire. The ('01'0 or air-bag is distended to subject the tire casing within the matrix to pressure by being'intlattal by fluid pressure admitted through the inlet valve 10. Any suitable tluid under pressure may be employe'd tor disteuding or intlating the core or air bag, however, air pressure is ordinarily en'iployed tor this purpose.

From the above deseription it will be apparent that there is thus provided a deviee of the eharaeter deseribed possessing the particular teatures ot advantage belore enumerated as desirable. but whieh obviously is suseept-ible ot modiliration in its form, proportion, detail eoustruetion and ar 'rangement of parts without departing lrom the 'prineiple, involved or saerilieing any of its advantages.

Whil in'order to comply with the statute the inventiolu has been desrribed in language more or'less sperilie as to struellu'al l'eatures, it is to be understood that the invention is not limited to the speeilitdetailsshown, but that the means and eonstruetion herein diselosed romprlse but one ol several modes of putting the invention into etl'eet, and the invention is therelore elainled lll any ol' its forms or nmditieations within the legitimate and valld scope of the appended .elailns.

llaving thus deseribed my invention, l.

-laim:

circumferential told, the inner-edge otsaia told being reinforced, substantially as specitied.

at. In an inflatable core for tires; a pliable tubular annulus having a reentrant inner circumferential told, and an annular reinforcement for said told having a diameter intermediate the internal and external dian'ieters ot the core when distended.

5. In an inflatable eore tor tires, a pliable tubular annulus having a reentrant inner cireui'nt'erent-ial told, and two parallel integral beads termed on the exterior surface of the annulus on opposite sides of said told. I

6. in an inflatable (ore tor tires, a pliant tubular annulus having an inner circuml'erenee greaterthan the inner circumference of the tire to \\'lllt'll it is to be litted, and an exeess otmaterial on eaeh side ot the inner eireumterential line, said exeess material lalling in two llexible tolds. or bi hts on opposite sides ol' the inner eireumterential line substantially as speeitied;

T. In a tire role. a pliant tubular annulus, two parallel oppositely disposed annular shoulders on the inner sur't'aee ot said annulus and an expansible section intermediate said shoulders,

8. in a tire eore, a pliant tubular annulus ol labrie having a ret ntrant inner ('irenmt'erential told, and means for applving internal pressure to said ror e.

t). In a tire eore, a tubular annulus, two parallel shoulder beads upon the inner eireum'l'erenee ol' the annulus. and means for applying internal pressure to the eore said shoulder beads being laterally movable in relation one with the other under the intluell 'e ol' the internal pressure.

ll). ln a tire eole. a tubular annulus, two

abrupt oppositely disposed shoulder beads onlhe nmer eirruml'erenee of the annulus eoint-iding with the bead edges ot the tire to be mounted on said rore, said shoulder beads being relatively separable by the applieation of internal pressure to the (or-e.

11. In a tire eore. a tubular annulus. two parallel shoulder beads upon the inner ('ireumierenee ol' the annulus, a bellows told in said tubular annulus intermediate said shoulders and means applying internal pressure to the eoref 19. in a tire eore, a tubula annulus. two parallel shoulder beads upon the inner eirrumterem-e ot' the annulus. an expansible area between said shoulders, and means for applying internal pressure to the core.

Tn testimony whereof I'have hereunto set my hand this 16th day of April A. D., 1920,

A N D REW Hl l ICTTER Witnesses DUNCAN, t'i. (l. 

